Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10364620 | Drill rod clamping system and methods of using same | David Robert Ritter, Anthony Charles William Markham | 2019-07-30 |
| 10280697 | Drill rod alignment device and systems and methods of using same | David Robert Ritter, Anthony Charles William Markham | 2019-05-07 |
| 10066451 | Drill rod clamping system and methods of using same | David Robert Ritter, Anthony Charles William Markham | 2018-09-04 |
| 10047576 | Drill rod handling system for moving drill rods to and from an operative position | Anthony Charles William Markham | 2018-08-14 |
| 9593543 | Drill rod handling system for moving drill rods to and from an operative position | Anthony Charles William Markham | 2017-03-14 |
| 6935424 | Mitigating risk by using fracture mapping to alter formation fracturing process | Lyle Lehman | 2005-08-30 |